What to Watch Monday: Abdul's Dancing, Major Crimes Wraps, Broke Girls Wage Wars and More

On TV this Monday: Major Crimes closes the season’s final case, the Broke Girls declare cupcake war, Paula Abdul judges the Dancing All-Stars and Castle‘s romantic getaway turns into a work weekend. Here are 10 programs to keep on your radar tonight.

8 pm Dancing With the Stars: All-Stars (ABC) | Former American Idol/The X Factor judge/MC Skat Kat dance partner Paula Abdul stops by to evaluate the ballroom gang as they perform dances — like disco — not usually featured in the competition.

8 pm Switched at Birth (ABC Family)| Bay rushes to return the money she took from John’s safe; Emmett forms a new band with Nikki and Toby.

8 pm Alphas (Syfy)|Firefly‘s Summer Glau returns as Skylar Adams, who Harken and Gary learn is being held prisoner by Stanton Parish. Elsewhere, the team wonders just how far Dr. Rosen will go to avenge Dani’s death.

9 pm Gossip Girl (The CW)| Serena and Nate both learn something shocking about their significant others, and a rival from Blair’s past shows up as she prepares to launch her new fashion line

9 pm All On the Line (Sundance) | Joe has plus-size fashion house Domino Dollhouse design a dress for The Help‘s Octavia Spencer and a capsule collection for the Lane Bryant chain. (And if there’s any justice in the world, Project Runway castoff Ven will watch this while weeping into a pint of Chubby Hubby.)